Distribution characteristics and influencing factors of bacterioplankton community with offshore distance variation in the surface seawater of Bohai Bay

Zhao Wei; Wang Jingjing; Xu Song; Li Qingqing; Yang Rong; Zhang Xiaoxia; Huang Zhiyong

doi:10.3969/j.issn.0253-4193.2019.12.015

Volume 41 Issue 12

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Zhao Wei，Wang Jingjing，Xu Song, et al. Distribution characteristics and influencing factors of bacterioplankton community with offshore distance variation in the surface seawater of Bohai Bay[J]. Haiyang Xuebao，2019, 41(12)：156–171，doi:10.3969/j.issn.0253−4193.2019.12.015

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Distribution characteristics and influencing factors of bacterioplankton community with offshore distance variation in the surface seawater of Bohai Bay

doi: 10.3969/j.issn.0253-4193.2019.12.015

Tianjin Key Laboratory for Industrial Biological Systems and Bioprocessing Engineering, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin 300308, China

Received Date: 2018-12-12
Rev Recd Date: 2019-06-21

Available Online: 2021-04-21

Publish Date: 2019-12-25

Abstract

Abstract

In order to study the impact of coastal pollution in Bohai Bay on the microecology of sea areas with different distances from the shore, the bacterioplankton community compositions (BCCs) in surface seawater samples from 6 stations with different offshore distances along the coastal region of Bohai Bay were analyzed through high throughput sequencing technology, and the main factors affecting the variation of BCCs were explored by combining environmental and spatial factors in this region. The results showed that there was gradient change of environmental factor in the studied region, such as the contents of nitrogen nutrients were higher in the nearshore station than those in the offshore station. Although there was no significant difference tested for the alpha diversity among different sites, the diversity indexes were still relatively higher in the nearshore stations. The bacterioplankton community compositions were significantly varied with the change of offshore distances. Members of Gammaproteobacteria and Bacteroidetes were mainly enriched in nearshore stations which were closely related with the contents of nitrogen nutrients, members of Cyanobacteria were mainly enriched in offshore stations, which were closely related to ammonia nitrogen, transparency and conductivity. The variance partitioning analysis showed that PCNM variables purely contributed most (38.1%) to the variation of community structure, indicating that there may be environmental variables with spatial structure within the research scope that had not yet been measured may affect the spatial distribution of the bacterioplankton community. Meanwhile, the results of functional prediction indicated that the eutrophication, hydrocarbon pollution and other environmental conditions in the nearshore station may contribute to the change of BCCs. This study explored the variation of offshore-distance-varied BCC in the coastal region of Bohai Bay from environmental and spatial impact, which may provide reference for the study and protection of marine environment in Bohai Bay.
- Bohai Bay,
- bacterioplankton community composition,
- geographic distribution,
- function prediction,
- PCNM

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